Home / 10,938.16-15,093.76-6,221.28

Finding the Fourth Proportional to 10,938.16, 15,093.76 and 6,221.28

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Solution

The fourth proportional to 10,938.16, 15,093.76 and 6,221.28 is: 8,584.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,938.16 : 15,093.76 = 6,221.28 : x
  2. Step 2: Convert to fraction form
    10,938.16/15,093.76 = 6,221.28/x
  3. Step 3: Cross multiply
    10,938.16x = 15,093.76 × 6,221.28
  4. Step 4: Simplify right side
    10,938.16x = 93,902,507.21
  5. Step 5: Solve for x
    x = 93,902,507.21/10,938.16
  6. Step 6: Final answer
    x = 8,584.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.